<template>
    <div class="login_container">
        <div class="login_box">
          <!-- 头像区域 -->
          <div class="avatar_box">
            <img src="../assets/logo.png" alt="">
          </div>
          <!-- 登录表单区域 -->
          <el-form label-width="0px" class="login_form" :model="loginForm" ref="loginFormRef" :rules="loginFormRules">
            <!-- 用户名 -->
            <el-form-item prop="username">
              <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
              <el-input type="password" prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"></el-input>
            </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btns">
              <el-button type="primary" @click="login">登录</el-button>
              <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
          </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data() {
        return {
          // 这是登录表单的数据绑定对象
          loginForm: {
            username: 'admin',
            password: '123456'
          },
          // 这是表单的验证规则对象
          loginFormRules: {
            // 验证用户名是否合法
            username: [
              { required: true, message: '请输入登录名称', trigger: 'blur' },
              { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
            ],
            // 验证密码是否合法
            password: [
              { required: true, message: '请输入登录密码', trigger: 'blur' },
              { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
            ]
          }
        }
    },
    methods: {
      // 点击重置按钮，重置登录表单
      resetLoginForm() {
        // console.log(this);
        this.$refs.loginFormRef.resetFields();
      },
      login() {
        this.$refs.loginFormRef.validate(async valid => {
          if (!valid) return
          const { data: res } = await this.$http.post('login',this.loginForm);
          if(res.meta.status !== 200)  return this.$message.error('登录失败！');
          this.$message.success('登录成功');
          window.sessionStorage.setItem('token', res.data.token);
          this.$router.push('/home');
        })
      }
    }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>